The building, which manufactures Saputo Cheese USA, was evacuated and cordoned off after a worker reported falling ill, said L.A. County Fire Supervisor Michael Pittman. The worker was transported to a local hospital.

A second worker also received medical treatment and at least one additional person complained of reaction to the odorous chemical, Pittman said.

Fire crews identified the leak and plugged it shortly after being called to the scene, Pittman added.